Sascha Hauer wrote:
> Some mci controllers cannot transfer data with their DMA engines
> if the data is not sufficiently aligned. Normally this is a driver
> problem, but hey, we have no problem aligning the data and keep
> the burden from the drivers.
>
> Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
> Cc: Juergen Beisert <jbe@xxxxxxxxxxxxxx>
Acked-by: Juergen Beisert <jbe@xxxxxxxxxxxxxx>
> ---
> drivers/mci/mci-core.c | 12 ++++++------
> 1 files changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/mci/mci-core.c b/drivers/mci/mci-core.c
> index 34c4f8c..6f31cca 100644
> --- a/drivers/mci/mci-core.c
> +++ b/drivers/mci/mci-core.c
> @@ -347,7 +347,7 @@ static int mci_switch(struct device_d *mci_dev,
> unsigned set, unsigned index, static int mmc_change_freq(struct device_d
> *mci_dev)
> {
> struct mci *mci = GET_MCI_DATA(mci_dev);
> - char ext_csd[512];
> + char *ext_csd = sector_buf;
> char cardtype;
> int err;
>
> @@ -439,8 +439,8 @@ static int sd_change_freq(struct device_d *mci_dev)
> struct mci *mci = GET_MCI_DATA(mci_dev);
> struct mci_cmd cmd;
> struct mci_data data;
> - uint32_t switch_status[16];
> - uint scr[2];
> + uint32_t *switch_status = sector_buf;
> + uint32_t *scr = sector_buf;
> int timeout;
> int err;
>
> @@ -461,7 +461,7 @@ static int sd_change_freq(struct device_d *mci_dev)
>
> retry_scr:
> pr_debug("Trying to read the SCR (try %d of %d)\n", 4 - timeout, 3);
> - data.dest = (char *)&scr;
> + data.dest = (char *)scr;
> data.blocksize = 8;
> data.blocks = 1;
> data.flags = MMC_DATA_READ;
> @@ -502,7 +502,7 @@ retry_scr:
> timeout = 4;
> while (timeout--) {
> err = sd_switch(mci_dev, SD_SWITCH_CHECK, 0, 1,
> - (uint8_t*)&switch_status);
> + (uint8_t*)switch_status);
> if (err) {
> pr_debug("Checking SD transfer switch frequency feature failed: %d\n",
> err); return err;
> @@ -520,7 +520,7 @@ retry_scr:
> if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
> return 0;
>
> - err = sd_switch(mci_dev, SD_SWITCH_SWITCH, 0, 1,
> (uint8_t*)&switch_status); + err = sd_switch(mci_dev, SD_SWITCH_SWITCH, 0,
> 1, (uint8_t*)switch_status); if (err) {
> pr_debug("Switching SD transfer frequency failed: %d\n", err);
> return err;
--
Pengutronix e.K. | Juergen Beisert |
Linux Solutions for Science and Industry | Phone: +49-8766-939 228 |
Vertretung Sued/Muenchen, Germany | Fax: +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de/ |
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